We know that he/they was/were using Tor, shy, cautious, and had enough experience to hide his identity, and what helped Satoshi is that talking about Bitcoin and interest in it began in 2013, 3 years after his disappearance, and it is difficult to find a service that records junk data for 3 years.
It was 2009-2010, not 2024. If Satoshi started Bitcoin today, it would be difficult for him to hide his identity.
Another important factor is that those that pursue anonymity often lose it when they want to convert their coins to fiat, so we have seen cases of hackers which got caught as a particular set of coins was linked to their real identity, but Satoshi has never touched his coins, and as long as he decides to keep this policy it will be very difficult to catch him, besides even if security agencies around the world gave their attention to bitcoin back then, it is unlikely they thought it was as big of a deal as it became, so the investigation they did at the time may not have been as comprehensive as we think, and a lot of information which could have been used to identify him has been lost forever.